Shaking or oscillating device for molding boxes



Nw, 11,1924.. v 1,515,339

- J. CASH SHAKING CR CSGILLATING DEVICE FOR MOLDING BOXES :mod Feb. 1. 192s munnullliiflfll 2i 2@ iu@ Patented Nov. 1l, 1924..

Luana J'OSEPH CASH, OF TIPTON, ENGLAND.

SHARING OR OSCILLATING :DEVICE FOR MOLDING BOXES.

Application filed February 1, 1923.

To all whom t may concern.'

Be it known that JOSEPH CASH, a subject of the King of Great Britain, residing at Horseley Heath, Tipton, in the county of Stafford, England, has invented a new and useful Improved Shaking or Oscillating Device for Molding Boxes, and he does hereby declare the following to be a full, clear, and exact description of the same.

This invention has reference to an improved shaking or oscillating device for molding boxes, and has for its object to provide an improved adjustable meansfor controlling the oscillations of the molding box, the invention being particularly applicable kto apparatus of this character which is operated directly by hand or by mechanism manually cont-rolled.

The primary object of the present invention is to provide a hydrostatic connexion between the support for the molding box or table and the spring by which the required amount of oscillation is governed.

This invention consists of an improved apparatus for shaking or oscillating mold ing boxes of the kind which employ a variably compressed spring to govern the amount of oscillation, characterized by a hydrostatic support for the molding box or table through a rod or plunger connected to the said spring so that the hydrostatic support can be made when desired through a curved channel or passage and thusl permit 0f ease of access for adjustment or other purpose. e

The present invention will now be described in one of its forms with particular reference to the accompanying sheet of drawings, but various modications may be made in the construction and arrangement thereof according to dierent requirements.

In the drawings similar reference numerals indicate similar parts in the several views.

Fig. 1 is a front elevation of the apparatus.

Fig. 2 is a sectional plan taken on line 2-2 0f Fig. 1.

Fig. 3 is a part sectional elevation to an enlarged scale taken on line 3-3 of Fig. 2.

Fig. 4 is an enlarged sectional detail of Serial No. 616,413.

the method of supporting the upper section of the molding box, and

Fig. 5 is a plan of Fig. 4 with the top section of the molding box removed.

The molding box in the usual manner has two ysections, an upper section 6 and a lower section 7, and is supported on a table 8 which is adapted to have a reciprocal or oscillating motion in a vertical plane. This table is formed with a central downwardly projecting stem 8a which is capable of a vertically slidable motion within a tubular stem 9a which forms the central section of the support or framework 9 of the appara-` tus. This support or framework contains a substantially L, U or other formation of inner tubularmember 10 the inner upwardly extending section of which provides a bearing or mounting for a .rod or plunger V11 which is'resiliently connected by means of a. coil spring 12 to the table 8 the spring 12 being employed in known manner to govern and effect part of the reciprocal or shaking motion of the table 8 and the molding box thereon. The member 10 hereinbefore referred to in the construction illustrated comprises the base section 10 from which project the two tubes 13 and 14 respectively, the tube 13 being surrounded by and connected to another tube 15 which projects beyond the top of the tube 13 and forms a guide member for the spring controlled tube 16 which is connected by the cylindrical bush 17 to the rod or plunger 11, the lower end of the rod or plunger being provided with a cup leather 18 which provides a non-leak ing connexion between the rod or plunger 11 and the bore of the tube 13. The tube 16 has an angular liange 16 at its lower extremity which forms a bearing for the lower` end of the coil spring 12, the upper end of the said spring bearing against the underface of the table 8. Contained within the tube 14 is a piston 19 which is provided with a cup leather 20 which forms the means for preventing the escape of the fluid contained within the tube 14. At the upper end of this tube is provided a chamber 21 provided at its outer end with a hand wheel or nut 22 mounted on the screw 23 connected to the piston 19, The hand wheel or nut 22 when freed from the threaded outer end of the chamber 21 by the withdrawal of the grub screw can be rotated to adjust the position of the screw 23 and thereby the posil on of the piston 19 within the tube 11i to determine the initial effective force of the spring 12 and thereby the normal position of the table 8. The connexion between the piston 19 and the rod or plunger 11 is by means "f oil, water or other liquid which is contained within the member 1() and the tubular extensions 13 and lil thereof respectively. By means of this hydrostatic device the initial adjustment or effective force of the coil fpring 12 can be readily achieved from one side of the machine by means of the wheel or nut 22.

The lifting and lowering of the table 8 and the molding boa or plate thereon` is ac compli'shed by means of a rack and pinion gear which is seen in Figs. 1 andu2, any other forni A of lifting and lower'inggear may be employed however. The centra-l stem 8a is provided or fitted at the one side '.vith a rack 25 which is engaged by a toothed segment 26 mounted on a spindle 27 by means of the bracket 28, the segment 26being extended on the other side of the spindle in the form of a hand lever 29 whereby a radially reciprocal movement can be readily imparted to the segment 26 and therefrom a reciprocal motion to the rack 25.

For the purpose ofmaintaining the upper section 6 of the molding box'in a raised position when it is desired toremove it from the lower s ection 7 l providefour vertical rods 30 each formed at their upperend with a step 8Oa vthe rods 30 are also provided with cross pins 31 and 32 adapted to engage above and below the bottom sectionalplate( of the molding bonY when it is desired to also maintain the bottom section of the mould in position relative to the top section@ as seen in Fig. l. l/Vhere it is only desired to maintain the upper section 6 of themould in the raised position the pins 32 are dispensed with in which event the lower mould section plate 7 will remain on the table 8. rlhe four rods 30 are slidably mounted within blocks 5 which are in turn slidaloly mounted one on each ofthe f our radiating arms 34 constituting a frameworlr Pivotally rmounted on each of the blocks 3 3 by means of a pin 35 is a hook ended catch 3 6 which is adapted to engage the Vtoothed collars 3 7 secured to the lower end of each vertical rod 3 0. rllhecatches 3 6 have pivotal connexion bymeans of the p ins 38 with a pair of drawbars 39 Vwhich are connected together by means of the crossbar l() which in turn is connectedto a spindle L,l1 which is provided with a lrnoba2 at its outer extremity whereby the drawbars can be reciprocated. ln the position seen in Figs. 1 and 2 of the drawings the catches 36 are in engagement with the toothed collar 37 and by this means the rods 30 and the molding boi; are maintained in their litte-:l or raised position which obtains when a change of molding boi; or pattern is being effected at the commencement of or on the completion of the ramming operation. By pulling the lnob 12 the drawbars 39 are moved horizontally and thereby through the pins 38 the catches 86 are released from the toothed collars 3? and in consequence the vertical rods 30 are lowered together with the molding bor: and the molding box is then supported upon the table 8 in a position for the reciprocal motion for the ramming operation. rlhe dotted position of the table 8 in Fig. 1 shows how the table is employed to raise and lower the molding boi; in conjunction with the vertical rods 30.y Various other forms of lifting and lowering gear may be employedv for the molding box apart from that described and illustrailed, and moreover various departures may be made in the construction of the ramming apparatus itself within the scope of the appended claims.

Claims l 1. ln jar rain molding machines wherein the molding table is adapted for manually operable reciprocal motion, the combination of a reciprocal molding table, a support for said table7 a spring interposed between the table and the support, said sprfng being adapted to wholly or subs antially counterbalance the table and the load thereonQ and a variable hydrostatic support co-operating;` with the said spring. y l

V2. ln iar ram molding machines wherein the molding table is adapted for manually operable reciprocal motion9 the combination of a reciprocal molding table, a. support for said table, spring interposed between the table and the support7 said spring being adapted to wholly or substantially counterbalance the table and the load thereon, a variable hydrostatic support co-operating with the said spring, and means for varying the pressure of the hydrostatic support whereby the initial force of the spring can @adjusted .Y L c. Y

3. A jarram molding machine wherein the moldingv table adapted for manually operable reciprocable motion, comprising in combination a tubular pillar a reciprocal molding table provided with a tubular stem located in said pillar, a tubular plunger connection within said stem, a coil spring connecting said table to theplunger, a hydrostatic connection to said plunger, means for imparting a reciprocal motion to the said table, and means for varying the pressure of hydrostatic connection to adjust the initial force of the said spring.

. l. A jar ram molding machine wherein the molding table is adapted for manually operable reciprocable motion, comprising in combination a tubular pillar, a reciprocal molding table provided with a tubular stem located in said pillar, a tubular plunger connection Within said stem, a coil spring connecting said table to the plunger, a hydrostatic connection to said plunger, means 'for imparting a reciprocal motion to the said table, means for varying the pressure of hydrostatic connection to adjust the initial 10 force of the said spring, and means for maintaining the molding box in its raised position clear of the molding table. f In testimony whereof, I have signed my name to this specication.

JOSEPH CASH. 

